diff --git a/pydatalab/pyproject.toml b/pydatalab/pyproject.toml
index 89113cf98..e0cec34f6 100644
--- a/pydatalab/pyproject.toml
+++ b/pydatalab/pyproject.toml
@@ -60,7 +60,7 @@ server = [
     "bokeh ~= 2.4, < 3.0",
     "Flask ~= 3.0",
     "Flask-Login ~= 0.6",
-    "Flask-Cors ~= 4.0",
+    "Flask-Cors ~= 5.0",
     "Flask-Dance ~= 7.1",
     "Flask-PyMongo ~= 2.3",
     "Flask-Mail ~= 0.10",
diff --git a/pydatalab/requirements/requirements-all-dev.txt b/pydatalab/requirements/requirements-all-dev.txt
index 7e96b8b1a..96c1903bc 100644
--- a/pydatalab/requirements/requirements-all-dev.txt
+++ b/pydatalab/requirements/requirements-all-dev.txt
@@ -106,7 +106,7 @@ flask==3.0.3
     #   flask-pymongo
 flask-compress==1.15
     # via datalab-server (pyproject.toml)
-flask-cors==4.0.1
+flask-cors==5.0.0
     # via datalab-server (pyproject.toml)
 flask-dance==7.1.0
     # via datalab-server (pyproject.toml)
diff --git a/pydatalab/requirements/requirements-all.txt b/pydatalab/requirements/requirements-all.txt
index eb3ce5399..8a9ff4c4f 100644
--- a/pydatalab/requirements/requirements-all.txt
+++ b/pydatalab/requirements/requirements-all.txt
@@ -89,7 +89,7 @@ flask==3.0.3
     #   flask-pymongo
 flask-compress==1.15
     # via datalab-server (pyproject.toml)
-flask-cors==4.0.1
+flask-cors==5.0.0
     # via datalab-server (pyproject.toml)
 flask-dance==7.1.0
     # via datalab-server (pyproject.toml)